RT Journal Article SR Electronic T1 Cancer risk in patients treated surgically for duodenal ulcer. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1675 OP 1675 DO 10.1136/gut.35.11.1675 VO 35 IS 11 A1 C P Caygill A1 M J Hill YR 1994 UL http://gut.bmj.com/content/35/11/1675.1.abstract AB